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SP-28 Contributions to Colorado Seismicity and Tectonics: A 1986 Update SP-28 Contributions to Colorado Seismicity and Tectonics: A 1986 Update
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SP-19 Colorado Tectonics SP-19 Colorado Tectonics, Seismicity and Earthquake Hazards: Proceedings and Field Trip Guide of a Symposium Held in Denver, Colorado, June 4-6, 1981